NATURE

It's not known whether Adélies snack on the gonads as a delicacy or are being driven to unusual food sources by a changing habitat.

Current cheetah numbers and range could justify listing the species as 'endangered'.

The National Weather Service predicts snow totals of 8 to 15 inches in the region.

These ferocious baby dinosaurs' teeth all fell out as they turned into adults.

The fish was discovered in the poorly understood 'twilight zone' between shallow and deep waters.

A robotic vehicle filmed some of the world's toughest animals and plants beneath the ice sheet.

Cornish Sardine Management Association said that one of its vessels had released a catch for 'safety' reasons.

Colo, a mother-of-three, was the first gorilla to born in a zoo.

Study was conducted in water fleas, a species that can reproduce both sexually and asexually.

A golden jackal has never been pictured alive before and living wild in the Czech Republic.

Some of the fantastically horrible-looking animals have defied identification as a known species so far.

Scientists claim that previous observations of altruistic behaviour in primates resulted from flawed study designs.

Shark was filmed with remote operating vehicle off during dives off coast of California in 2009.

A snake with an iridescent head – likened to Ziggy Stardust – is among one of many newly discovered species.

Killer whales and Greenland sharks could attack polar bears as well as eat their prey - seals.

Many animals and plants in nature have strange and scary appearances.

"Superdeep" diamonds form as far as 750km down into the Earth – that's more than the length of Florida.

About 80% of the world's volcanic activity happens underwater - now scientists have caught an eruption in the act.

Six new species discovered in vent chimneys 2.8km deep in the south-west Indian Ocean.

Evolutionary biologists also reveal why they have no teeth or pelvic fin.

The loss of the supercontinent Pangea has been making the Earth cool quicker and form thinner crust.

Scientists look at how polygamous and seasonal breeding systems lead to a longer baculum.

Gigantic waves often occur in North Atlantic due to underwater plateaus and freak wind patterns.

The Marinoan glaciation lasted for millions of years and covered the Earth in ice from pole to pole.

Wisdom's latest egg is expected to hatch around February 2017.

Trophy hunting and retaliatory killings are threatening wild lion populations.

The spider was found in a forest in India and researchers were struck by how much it looked like the Sorting Hat.

A monkey voice simulation says: 'Will you marry me?'

Final episode of series will focus on cities and how animals adapt to these artificial habitats.